Rhodacaridae

Generalised dorsum of Rhodacarus, from here.


Belongs within: Gamasina.

The Rhodacaridae are a group of mostly small, delicate, free-living mites commonly found in deeper soil layers. They are predators of minute animals such as collembolans or nematodes (Lindquist et al. 2009).

Characters (from Lindquist et al. 2009): Palpi five-segmented, with separate tibia and tarsus; palptarsal apotele three-timed; legs IV with ten setae on genu (2 2/1, 3/1 1), ten on tibia (2 1/1, 3/1 2); male with sternal setae st5 on sternitigenital shield; female sternal shield fused with metasternal plates so as to include fourth pair of sternal setae; anterior portion of female sternal shield and male sternitigenital shield undifferentiated from more posterior portions.

<==Rhodacaridae [Rhodacarellinae, Rhodacarinae]
    |--Afrogamasellus Loots & Ryke 1968 H73
    |    |  i. s.: A. lubalensis (Loots 1969) H73
    |    |         A. mitigatus (Berlese 1924) [=Gamasellus mitigatus] H73
    |    |--A. succinctus group H73
    |    |    |--*A. franzi (Ryke & Loots 1966) [=Cyrtolaelaps (Gamasellus) franzi] H73
    |    |    |--A. franzoides Hurlbutt 1973 H73
    |    |    |--A. kilimanjaroensis (Ryke & Loots 1966) [=Cyrtolaelaps (Gamasellus) kilimanjaroensis] H73
    |    |    |--A. mongii Hurlbutt 1973 H73
    |    |    |--A. quadrisigillatus (Berlese 1916) [=Gamasellus quadrisigillatus] H73
    |    |    `--A. succinctus (Berlese 1916) [=Gamasellus succinctus] H73
    |    |--A. luberoensis H73
    |    |--A. myersi group H73
    |    |    |--A. bakeri Hurlbutt 1973 H73
    |    |    |--A. citri Loots 1969 H73
    |    |    `--A. myersi H73
    |    |--A. tetrastigma group H73
    |    |    |--A. celisi H73
    |    |    |--A. evansi H73
    |    |    |--A. isthmus Hurlbutt 1973 H73
    |    |    |--A. kahusiensis H73
    |    |    |--A. lootsi Hurlbutt 1973 H73
    |    |    |--A. lyamunguensis Hurlbutt 1973 H73
    |    |    |--A. muhiensis H73
    |    |    |--A. nyinabitabaensis H73
    |    |    |--A. rugegensis H73
    |    |    |--A. tetrastigma (Berlese 1916) [=Gamasellus tetrastigma, Cyrtolaelaps (Gamasellus) tetrastigma] H73
    |    |    `--A. uluguruensis Hurlbutt 1973 H73
    |    `--A. truncatus group H73
    |         |--A. latigynia Hurlbutt 1973 H73
    |         |--A. maskamensis (Ryke & Loots 1966) [=Cyrtolaelaps (Gamasellus) maskamensis] H73
    |         |--A. paratruncatus Hurlbutt 1973 H73
    |         `--A. truncatus Hurlbutt 1973
    |--Protogamasellopsis Evans & Purvis 1987 LKW09, EP87
    |    |--*P. corticalis Evans & Purvis 1987 EP87
    |    `--P. dioscorus (Manson 1972) [=Protogamasellus diocorus] EP87
    |--Tangaroellus LKW09
    |--Heydeniella Richters 1907 ET79
    |    |--*H. crozetensis Richters 1907 ET79
    |    `--H. goei ET79
    |--Rhodacarellus Willmann 1935 K86
    |    |--*R. subterraneus Willmann 1935 ET79
    |    |--R. arcanus Athias-Henriot 1961 H73
    |    |--R. corniculatus Willmann 1935 K86
    |    |--R. silesiacus Willmann 1936 K86
    |    `--R. vervacti K86
    |--Rhodacaropsis Willmann 1935 K86
    |    |--R. attenuata Loots 1969 K86
    |    |--R. botosaneanui (Petrova & Beron 1973) [=Rhodacarus (Rhodacaropsis) botosaneanui] FH93
    |    |--R. cubanus (Petrova & Beron 1973) [=Rhodacarus (Rhodacaropsis) cubanus] FH93
    |    `--R. inexpectata Willmann 1935 K86
    |--Rhodacarus Oudemans 1902 K86
    |    |--*R. roseus Oudemans 1902 ET79
    |    |--R. ancorae Karg 1971 K91
    |    |--R. angustiformis K86
    |    |--R. berresfordi Loots 1969 K86
    |    |--R. calcarulatus Berlese 1921 K86
    |    |--R. coronatus Berlese 1921 K91
    |    |--R. (Multidentorhodacarus) denticulatus Berlese 1920 FH93
    |    |--R. haarlovi AK91
    |    |--R. marksae Domrow 1957 H98
    |    |--R. minimus KA90
    |    |--R. pallidus Hull 1918 K86
    |    `--R. strenzkei Willmann 1957 K86
    `--Afrodacarellus Hurlbutt 1973 H73
         |--*A. femoratus Hurlbutt 1973 H73
         |--A. camaxiloensis H73
         |--A. concavus Hurlbutt 1973 H73
         |--A. congoensis [=Afrogamasellus congoensis] H73
         |--A. kivuensis [=Afrogamasellus kivuensis] H73
         |--A. leleupi [=Afrogamasellus leleupi] H73
         |--A. longipodus Hurlbutt 1973 H73
         |--A. lunguensis [=Afrogamasellus lunguensis] H73
         |--A. lupangaensis Hurlbutt 1973 H73
         |--A. machadoi (Loots 1969) [=Afrogamasellus machadoi] H73
         |--A. minutus Hurlbutt 1973 H73
         |--A. mossi Hurlbutt 1973 H73
         |--A. msituni Hurlbutt 1973 H73
         |--A. ngorongoroensis Hurlbutt 1973 H73
         |--A. novembus Hurlbutt 1973 H73
         |--A. pili Hurlbutt 1973 H73
         |--A. pocsi Hurlbutt 1973 H73
         |--A. reticulatus [=Afrogamasellus reticulatus] H73
         |--A. ruwenzoriensis (Loots 1969) [=Afrogamasellus ruwenzoriensis] H73
         `--A. uviraensis [=Afrogamasellus uviraensis] H73

*Type species of generic name indicated

REFERENCES

[AK91] Alberti, G., M. Kratzmann, C. Błaszak, H. Streit & U. Blumröder. 1991. Soil mites and acidification: a comparative study of four forest stands near Heidelberg. In: Schuster, R., & P. W. Murphy (eds) The Acari: Reproduction, development and life-history strategies pp. 491–493. Chapman & Hall: London.

[EP87] Evans, G. O., & G. Purvis. 1987. A new ascid mite from St Helena with observations on the Protogamasellus complex (Acari: Mesostigmata). Journal of Natural History 21: 855–861.

[ET79] Evans, G. O., & W. M. Till. 1979. Mesostigmatic mites of Britain and Ireland (Chelicerata: Acari—Parasitiformes). An introduction to their external morphology and classification. Transactions of the Zoological Society of London 35: 139–270.

[FH93] Farrier, M. H., & M. K. Hennessey. 1993. Soil-inhabiting and free-living Mesostigmata (Acari-Parasitiformes) from North America: an annotated checklist with bibliography and index. North Carolina Agricultural Research Service, North Carolina State University, Technical Bulletin 302: i–xvi, 1–408.

[H98] Halliday, R. B. 1998. Mites of Australia: A checklist and bibliography. CSIRO Publishing: Collingwood.

[H73] Hurlbutt, H. W. 1973. The Afrogamasellus Loots and Ryke and Afrodacarellus n. gen. (Acarina: Rhodacaridae) of Tanzania. Acarologia 15 (4): 565–615.

[K91] Koehler, H. H. 1991. A five year study on the secondary succession of Gamasina on a ruderal site: the influence of recultivation. In: Dusbábek, F., & V. Bukva (eds) Modern Acarology: Proceedings of the VIII International Congress of Acarology, held in České Budĕjovice, Czechoslovakia, 6–11 August 1990 vol. 1 pp. 373–383. SPB Academic Publishing: The Hague.

[K86] Krantz, G. W. 1986. Acari: Rhodacaridae. In: Botosaneanu, L. (ed.) Stygofauna Mundi: A Faunistic, Distributional, and Ecological Synthesis of the World Fauna inhabiting Subterranean Waters (including the Marine Interstitial) pp. 632–634. E. J. Brill/Dr W. Backhuys: Leiden.

[KA90] Krantz, G. W., & B. D. Ainscough. 1990. Acarina: Mesostigmata (Gamasida). In: Dindal, D. L. (ed.) Soil Biology Guide pp. 583–665. John Wiley & Sones: New York.

[LKW09] Lindquist, E. E., G. W. Krantz & D. E. Walter. 2009. Order Mesostigmata. In: Krantz, G. W., & D. E. Walter (eds) A Manual of Acarology 3rd ed. pp. 124–232. Texas Tech University Press.

Last updated: 23 April 2018.

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